(checked 2026-10-10)Outdoor Life (2024) names only the brand, so its tested unit may differ from this current listing.
A popular, cheap Amazon 2-pack of slim warmers that gets hot fast. In Outdoor Life's test it had the worst battery: 3.5 hours on low and 2 on high, versus the 6 hours on the listing. Amazon owners report the same, with some saying a charge never lasts beyond 2 hours.
Top complaints
- Battery runs out fast
Outdoor Life calls it the worst-performing battery in its test: 3.5 hours on low and 2.0 hours on high, against a listed 'up to 6 hours'. Amazon's summary says some owners report they don't stay charged long and never last beyond 2 hours.
- Durability questions
Amazon's review summary says durability gets mixed reviews.
- Two loose pieces
Outdoor Life notes there's no latching mechanism, so the two warmers don't clip together.
Source: Outdoor Life
What owners love
- Hot, even on low
It measured 116 °F on low, the hottest low setting in Outdoor Life's test, and 126 °F on high. Amazon owners say it gets very warm.
- Slim and glove-friendly
Lerat lists each unit at 0.6 inch thin and 2.1 oz. Outdoor Life liked the sleek profile, and Amazon owners say it fits comfortably in pockets and gloves.
- Cheap and easy to use
It cost about $20 a pair when Outdoor Life tested it, and its charging cable worked fine. Amazon owners find it easy to turn on and use.
- You'll be outside for more than a couple of hours
- You want the halves to clip together
- You want a power bank
- Short outings like a dog walk or a commute
- Slipping into a glove or a slim pocket
- A cheap gift
Scores (tap for why)
What experts say
- Outdoor Life: Not a pick (2024-11-04): the worst-performing battery in the test (2.0 h on high). It's cheaper, with a sleek profile but no latch.